The calculated distance (air line) between Yŏnggwang-ŭp and Chunghwa is approximately 119 miles respectively 191 kilometers.
By car or train, the actual journey to Chunghwa is certainly longer, as only the direct route (as the crow flies) between Yŏnggwang-ŭp and Chunghwa has been calculated here.
Air line (approximately)
191 kilometers
103 nautical miles